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Elasticsearch Guide [7.7] » Ingest node » Processors » Join Processor
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Join Processoredit

Joins each element of an array into a single string using a separator character between each element. Throws an error when the field is not an array.

Table 53. Join Options

Name Required Default Description

field

yes

-

The field to be separated

separator

yes

-

The separator character

target_field

no

field

The field to assign the joined value to, by default field is updated in-place

if

no

-

Conditionally execute this processor.

on_failure

no

-

Handle failures for this processor. See Handling Failures in Pipelines.

ignore_failure

no

false

Ignore failures for this processor. See Handling Failures in Pipelines.

tag

no

-

An identifier for this processor. Useful for debugging and metrics.

 
{
  "join": {
    "field": "joined_array_field",
    "separator": "-"
  }
}
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